A friend of mine wrote the Over the Top ruleset as a conversion of the Mersey Skirmish System (Dragon Rampant/Lion Rampant) for WWI. He then wrote a conversion of Chris Peers’ Back of Beyond book (which was written for the ) including campaign rules.
We played an introductory game last week to learn the rules so I played my Warlord Chinese army against his Dinosaur Hunters (who are armed archaeologists and paleontologists). Late in the game his biplane strafed my Rolls Royce armored car but missed destroying it by one point. Unfortunately we ran out of time due to the FLGS closing so we didn’t get to finish the game.